On the energy efficiency of MIMO hybrid beamforming for millimeter wave systems with nonlinear power amplifiers
On the energy efficiency of MIMO hybrid beamforming for millimeter wave systems with nonlinear power amplifiers
Multiple-input multiple-output (MIMO) millimeter wave (mmWave) systems are vulnerable to hardware impairments due to operating at high frequencies and employing a large number of radiofrequency (RF) hardware components. In particular, nonlinear power amplifiers (PAs) employed at the transmitter distort the signal when operated close to saturation due to energy efficiency considerations. In this paper, we study the performance of a MIMO mmWave hybrid beamforming scheme in the presence of nonlinea